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Species Latrodectus hesperus - Western Black Widow

Arthropods (Arthropoda) » Chelicerates (Chelicerata) » Arachnids (Arachnida) » Spiders (Araneae) » True Spiders (Araneomorphae) » Entelegynae » Cobweb Spiders (Theridiidae)

Spiders of the new genus Theridiotis (Araneae: Theridiidae)

By Herbert Levi
Transactions of the American Microscopical Society 73: 177-189, 1954

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Contributed by Mandy Howe on 15 February, 2016 - 3:52am

Arthropods (Arthropoda) » Chelicerates (Chelicerata) » Arachnids (Arachnida) » Spiders (Araneae) » True Spiders (Araneomorphae) » Entelegynae » Cobweb Spiders (Theridiidae)

The Spider Genus Theridula in North and Central America and the West Indies (Araneae: Theridiidae)

By Herbert W. Levi
Transactions of the American Microscopial Society vol. LXXIII no. 4, Wiley, 1954

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Contributed by Laura P. on 28 August, 2014 - 9:22am

Arthropods (Arthropoda) » Chelicerates (Chelicerata) » Arachnids (Arachnida) » Spiders (Araneae) » True Spiders (Araneomorphae) » Entelegynae » Cobweb Spiders (Theridiidae)

The spider genera Crustulina and Steatoda in North America, Central America, and the West Indies (Araneae, Theridiidae)

By Herbert W. Levi
Bulletin of the Museum of Comparative Zoology Harvard 117: 367-424, 1957

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Contributed by Mandy Howe on 2 September, 2012 - 9:56am

Arthropods (Arthropoda) » Chelicerates (Chelicerata) » Arachnids (Arachnida) » Spiders (Araneae) » True Spiders (Araneomorphae) » Entelegynae » Cobweb Spiders (Theridiidae)

A key and checklist of American spiders of the family Theridiidae north of Mexico (Araneae)

By Herbert W. Levi & Diane E. Randolph
The Journal of Arachnology 3: 31-51, 1975

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Contributed by Mandy Howe on 2 September, 2012 - 9:46am

Arthropods (Arthropoda) » Chelicerates (Chelicerata) » Arachnids (Arachnida) » Spiders (Araneae) » True Spiders (Araneomorphae) » Entelegynae » Cobweb Spiders (Theridiidae)

The genera of the spider family Theridiidae

By Herbert W. Levi & Lorna R. Levi
Bulletin Museum of Comparative Zoology Harvard 127: 1-71, 1962

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Contributed by Mandy Howe on 9 August, 2012 - 7:54am

Arthropods (Arthropoda) » Chelicerates (Chelicerata) » Arachnids (Arachnida) » Spiders (Araneae) » True Spiders (Araneomorphae) » Entelegynae » Cobweb Spiders (Theridiidae)

The spider genera Coressa and Achaearanea in America north of Mexico (Araneae, Theridiidae)

By Herbert W. Levi
American Museum Novitates 1718: 1-33, 1955

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Contributed by Mandy Howe on 9 August, 2012 - 7:26am

Arthropods (Arthropoda) » Chelicerates (Chelicerata) » Arachnids (Arachnida) » Spiders (Araneae) » True Spiders (Araneomorphae) » Entelegynae » Cobweb Spiders (Theridiidae)

Cosmopolitan and pantropical species of theridiid spiders (Araneae: Theridiidae)

By Herbert W. Levi
Pacific Insects 9: 175-186, 1967

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Contributed by Mandy Howe on 9 August, 2012 - 7:19am

Arthropods (Arthropoda) » Chelicerates (Chelicerata) » Arachnids (Arachnida) » Spiders (Araneae) » True Spiders (Araneomorphae) » Entelegynae » Cobweb Spiders (Theridiidae)

American spiders of the genus Achaearanea and the new genus Echinotheridion (Araneae, Theridiidae)

By Herbert W. Levi
Bulletin Museum of Comparative Zoology Harvard 129: 187-240, 1963

Full text at the Biodiversity Heritage Library: http://biodiversitylibrary.org/page/4269668

Contributed by Mandy Howe on 9 August, 2012 - 6:53am

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